 /* 重置样式 - 与index.html相同 */
 body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, code, form, fieldset, legend, input, textarea, p, blockquote, th, td {
    margin:0;
    padding:0;
}
table {
    border-collapse:collapse;
    border-spacing:0;
}
fieldset, img {
    border:0;
}
address, caption, cite, code, dfn, em, strong, th, var {
    font-style:normal;
    font-weight:normal;
}
ol, ul {
    list-style: none;
    text-decoration: none;
}
caption, th {
    text-align:left;
}
h1, h2, h3, h4, h5, h6 {
    font-size:100%;
    font-weight:normal;
}
abbr, acronym {
    border:0;
    font-variant:normal;
}
sup {
    vertical-align:text-top;
}
sub {
    vertical-align:text-bottom;
}
input, textarea, select {
    font-family:inherit;
    font-size:inherit;
    font-weight:inherit;
}
input, textarea, select {
    font-size:100%;
}
legend {
    color:#000;
}
li {
    list-style: none;
    text-decoration: none;
}

/* 全局样式 - 与index.html相同 */
body{
    font-size: 18px;
    font-family: 'Simsun';
    background-color: #f5f7fa;
    color: #333;
}

.nav{
    width: 15%;
    height: 100vh;
    background-color: #F1F4F9;
    position: fixed;
    left: 0;
    top: 0;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    z-index: 100;
    border-top-right-radius: 15px;
    overflow: hidden;
}

.nav a{
    text-decoration: none;
    color: #000;
    font-size: 20px;
}
    

.nav .logo{
    width: 100%;
    height: 80px;
    position: absolute;
    top: 5px;
    left: 5px;
}

.nav .logo img{
    height: 80px;
    position: absolute;
    left: 5px;
    top: 5px;
}

.nav .logo p{
    padding-left: 15px;
    font-size: 30px;
    font-family: 'Simsun';
    line-height: 80px;
    width: 30%;
    height: 100%;
    position: absolute;
    top: 5px;
    left: 80px;
}

.nav .show{
    width: 30%;
    height: 50px;
    position: absolute;
    right: 10px;
    top: 10px;
}

.show svg{
    width: 30px;
    height: 30px;
    position: absolute;
    top: 22px;
    right: 10px;
    background-color: #dbdbdb;
    border-radius: 5px;
    padding: 2px;
}

.show .unfold-icon{
    display: none;
}

.nav .content{
    width: 100%;
    height: 250px;
    position: absolute;
    top: 170px;
    left: 0;
    overflow: hidden;
}

.content div{
    width: 100%;
    height: 50px;
    margin-bottom: 15px;
    padding-left: 40px;
}

.content div:hover{
    background-color: #E7F2FF;
}

.content .classify{
    background-color: #4a75f55a;
}

.content .feedback{
    background-color: transparent;
}

.content .feedback:hover{
    background-color: #E7F2FF;
}


.content svg{
    width: 30px;
    height: 30px;
    padding-top: 5px;
    padding-left: 5px;
}

.content p{
    width: 60%;
    height: 50px;
    font-size: 17px;
    font-family: 'Simsun';
    line-height: 50px;
    float: right;
    margin-right: 40px;
}

.nav .manage{
    width: 100%;
    height: 70px;
    position: absolute;
    top: 550px;
    padding-left: 20px;
}

.nav .manage:hover{
    background-color: #E7F2FF;
}

.manage label{
    width: 80%;
    height: 50px;
}

.manage svg{
    width: 30px;
    height: 30px;
    padding-top: 15px;
    padding-left: 15px;
}

.manage a{
    text-decoration: none;
    color: #000;
    font-size: 18px;
}

.nav .exit{
    width: 100%;
    height: 60px;
    position: absolute;
    bottom: 10px;
    padding-left: 20px;
}

.nav .exit:hover{
    background-color: #E7F2FF;
}

.exit svg{
    width: 40px;
    height: 40px;
    padding-top: 15px;
    margin-left: 10px;
}

.exit p{
    float: right;
    margin-right: 100px;
    height: 70px;
    line-height: 70px;
}

/* 主内容区域 - 与index.html相同 */
.main{
    width: 80%;
    margin-left: 20%;
    padding: 20px;
    min-height: 100vh;
    box-sizing: border-box;
}

.main .title{
    margin-top: 20px;
    margin-bottom: 40px;
    text-align: center;
    color: #1684FC;
    font-size: 32px;
    position: relative;
}

.main .title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: #1684FC;
    margin: 10px auto;
    border-radius: 2px;
}

/* 分类筛选 */
.category-filter {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 12px;
    padding: 0 20px;
}

.filter-btn {
    background: #E7F2FF;
    border: 2px solid #CEE2FF;
    border-radius: 25px;
    padding: 12px 20px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.filter-btn:hover::before {
    left: 100%;
}

.filter-btn:hover, .filter-btn.active {
    background: linear-gradient(135deg, #1684FC, #0d6efd);
    color: white;
    border-color: #1684FC;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(22, 132, 252, 0.3);
}

.filter-btn.active {
    font-weight: 600;
}

/* AI工具卡片 */
.ai-tools-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.ai-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ai-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.ai-card-header {
    background: #1684FC;
    color: white;
    padding: 20px;
    display: flex;
    align-items: center;
}

.ai-icon {
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    font-size: 24px;
    color: #1684FC;
    font-weight: bold;
}

/* 不同模型的图标颜色 */
.ai-icon.deepseek {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.ai-icon.deepseek-r1 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.ai-icon.mistral {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.ai-icon.gemma {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    color: white;
}

.ai-icon.llama {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    color: white;
}

.ai-icon.phi {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    color: #333;
}

.ai-icon.qwen {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    color: #333;
}

.ai-icon.kimi {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    color: #333;
}

.ai-name {
    font-size: 22px;
    font-weight: bold;
}

.ai-category {
    font-size: 14px;
    opacity: 0.85;
    margin-top: 5px;
}

/* 评分样式 */
.ai-rating {
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.stars {
    color: #ffd700;
    font-size: 16px;
    letter-spacing: 2px;
}

.score {
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: bold;
}

.ai-card-body {
    padding: 20px;
}

.ai-description {
    color: #555;
    line-height: 1.6;
    margin-bottom: 20px;
    min-height: 80px;
}

/* 技术规格样式 */
.ai-tech-specs {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    border-left: 4px solid #1684FC;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 14px;
}

.spec-item:last-child {
    margin-bottom: 0;
}

.spec-label {
    color: #666;
    font-weight: 500;
}

.spec-value {
    color: #1684FC;
    font-weight: bold;
}

.ai-strengths {
    background: #F1F8FF;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.ai-strengths h4 {
    color: #1684FC;
    margin-bottom: 10px;
    font-size: 16px;
}

.strengths-list {
    list-style-type: none;
}

.strengths-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    color: #555;
    font-size: 14px;
}

.strengths-list li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #1684FC;
    font-weight: bold;
}

/* 使用场景样式 */
.ai-use-cases {
    margin-bottom: 20px;
}

.ai-use-cases h4 {
    color: #1684FC;
    margin-bottom: 10px;
    font-size: 16px;
}

.use-case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    background: #e3f2fd;
    color: #1976d2;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid #bbdefb;
    transition: all 0.3s ease;
}

.tag:hover {
    background: #1976d2;
    color: white;
    transform: translateY(-1px);
}

.ai-link {
    display: inline-block;
    background: #1684FC;
    color: white;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 25px;
    font-weight: bold;
    text-align: center;
    transition: all 0.3s ease;
    width: 100%;
    box-sizing: border-box;
}

.ai-link:hover {
    background: #0d6efd;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(22, 132, 252, 0.3);
}

/* 页脚 */
.footer {
    margin-top: 60px;
    text-align: center;
    color: #777;
    padding: 20px;
    border-top: 1px solid #eaeaea;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .nav {
        width: 25%;
    }
    .main {
        width: 75%;
        margin-left: 25%;
    }
}

@media (max-width: 768px) {
    .nav {
        width: 100%;
        height: auto;
        position: relative;
    }
    .main {
        width: 100%;
        margin-left: 0;
    }
    .ai-tools-container {
        grid-template-columns: 1fr;
    }
    .category-filter {
        gap: 8px;
        padding: 0 10px;
    }
    
    .filter-btn {
        padding: 10px 16px;
        font-size: 14px;
        border-radius: 20px;
    }
}